hu.bme.mit.incqueryd.engine.util.EObjectSerializer.java Source code

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Here is the source code for hu.bme.mit.incqueryd.engine.util.EObjectSerializer.java

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/*******************************************************************************
 * Copyright (c) 2010-2014, Gabor Szarnyas, Istvan Rath and Daniel Varro
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 * Gabor Szarnyas - initial API and implementation
 *******************************************************************************/
package hu.bme.mit.incqueryd.engine.util;

import java.io.File;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

import org.apache.commons.io.FileUtils;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.emf.ecore.resource.ResourceSet;
import org.eclipse.emf.ecore.resource.impl.ResourceSetImpl;
import org.emfjson.EMFJs;
import org.emfjson.jackson.resource.JsonResourceFactory;

public class EObjectSerializer {

    public static void serializeToFile(final EObject eObject, final String modelFile) throws IOException {
        final ResourceSet resourceSet = new ResourceSetImpl();
        Resource.Factory.Registry.INSTANCE.getExtensionToFactoryMap().put("json", new JsonResourceFactory());

        final Resource resource = resourceSet.createResource(URI.createURI(modelFile));
        final Map<String, Object> options = new HashMap<String, Object>();

        options.put(EMFJs.OPTION_INDENT_OUTPUT, true);
        options.put(EMFJs.OPTION_SERIALIZE_TYPE, true);

        resource.getContents().add(eObject);
        resource.save(options);
    }

    public static String serializeToString(final EObject eObject) throws IOException {
        Resource.Factory.Registry.INSTANCE.getExtensionToFactoryMap().put("json", new JsonResourceFactory());

        final File tempFile = createTempFile();
        serializeToFile(eObject, tempFile.getAbsolutePath());
        final String modelString = FileUtils.readFileToString(tempFile);

        return modelString;
    }

    public static File createTempFile() throws IOException {
        final File tempFile = File.createTempFile("temp-", ".json");
        tempFile.deleteOnExit();
        return tempFile;
    }

}